24997128 has 48 divisors (see below), whose sum is σ = 67680720. Its totient is φ = 7690176.

The previous prime is 24997127. The next prime is 24997139. The reversal of 24997128 is 82179942.

It is a self number, because there is not a number n which added to its sum of digits gives 24997128.

It is not an unprimeable number, because it can be changed into a prime (24997127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 975 + ... + 7137.

It is an arithmetic number, because the mean of its divisors is an integer number (1410015).

Almost surely, 2^24997128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24997128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33840360).

24997128 is an abundant number, since it is smaller than the sum of its proper divisors (42683592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24997128 is a wasteful number, since it uses less digits than its factorization.

24997128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198 (or 6181 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 24997128 is about 4999.7127917511. The cubic root of 24997128 is about 292.3905763539.

The spelling of 24997128 in words is "twenty-four million, nine hundred ninety-seven thousand, one hundred twenty-eight".